Stop video games altogether for at least a week. Read a book, ride a bike, shoot hoops with a friend or whatever you might enjoy doing. After a week if you want to play games then maybe pick up playing something other than Destiny and you'll probably enjoy it more. I was in the same spot you are in now and once I stopped playing for 1-2 weeks the addiction was broken and I don't even have any desire to play Destiny. I absolutely love video games among many other things and it is nice to be back to actually enjoying playing games when I do. Currently playing Borderlands 1, Divinity Original Sin, Dark Souls and Binding of Isaac. Can't wait for Fallout 4. If you want a fun shooting game to coop without the addictive gimmicks I would recommend BL1, BL2 or Payday. Good Luck!